4WD Kits

It comes down to what you're running and how long you're stopped for. As a rough guide:

- 100Ah: a fridge and lights for a long weekend, with regular driving to recharge
- 120Ah–200Ah: fridge, lights, compressor, device charging, and a few days parked up
- 240Ah–300Ah: extended remote touring, an inverter, or a second fridge

Tell us your fridge model and how many nights you typically stay put and we'll size it properly rather than guess.

If your 4WD has a modern variable-voltage or smart alternator, a simple isolator won't charge a lithium auxiliary battery properly — the alternator drops its output voltage once it thinks the starter battery is full, leaving the auxiliary battery permanently undercharged. A DC-DC charger takes whatever the alternator gives it and delivers a correct charge profile to the battery.

Some models are rated for under-bonnet installation and some aren't, and engine bay temperatures are genuinely hard on batteries. Check the specific product page and talk to us about your vehicle before committing. In-cab, in-tray or canopy mounting is often the better answer.

Some people do, but most use an auto electrician. You're running heavy-gauge cable through a firewall, fusing it correctly at both ends, and working around airbag and ECU wiring. Our kits come with the components matched and the wiring specified, which makes the install straightforward for a qualified installer.

Not from the alternator, no — that only charges while the engine's running. If you stay put for more than a day or two, add solar. A blanket on a lead lets you park in the shade and still chase the sun, which matters more in an Australian summer than roof-mounted panels do.

Yes, within the battery's discharge limits. The thing people underestimate is how much current a 240V appliance pulls at 12V — a 1200W kettle can draw over 100A from the battery. Check what your battery is rated to deliver and size the inverter to suit, or tell us what you want to run and we'll match it.

LiFePO4 cycles into the thousands of charges, against a few hundred for lead-acid, so for most people that's many years of touring rather than a replacement every couple of seasons. Cycle life varies by model, so check the figure on the specific product page.

Yes. LiFePO4 batteries can be connected in parallel to increase total capacity. Match model, capacity and age where you can, and talk to us before pairing a new battery with one that's been in service for years.

Vibration is a real failure mode for batteries, and mounting matters as much as the battery itself. Use a proper tray or box, secure it properly, and check the specific product page for the vibration and IP ratings on the model you're looking at.

A dual battery kit is installed into the vehicle with the components mounted separately. A Power Core system brings the battery, charging and distribution together in one unit, which suits canopy and tray builds where you want it tidy and serviceable in one place.